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Synonyms

faithful

American  
[feyth-fuhl] / ˈfeɪθ fəl /

adjective

  1. true to one's word, promises, vows, etc.

  2. steady in allegiance or affection; loyal; constant.

    faithful friends.
    Synonyms:
    staunch, devoted, true

  3. reliable, trusted, or believed.

  4. strict or thorough in the performance of duty.

    a faithful worker.

  5. adhering or true to fact, a standard, or an original; accurate.

    a faithful account;

    a faithful copy.
    Synonyms:
    exact, precise

  6. Obsolete. full of faith; believing.

noun

  1. the faithful,

    1. the believers, especially members of a Christian church or adherents of Islam.

    2. the body of loyal members of any party or group.

faithful British  
/ ˈfeɪθfʊl /

adjective

  1. having faith; remaining true, constant, or loyal

  2. maintaining sexual loyalty to one's lover or spouse

  3. consistently reliable

    a faithful worker

  4. reliable or truthful

    a faithful source

  5. accurate in detail

    a faithful translation
"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

    1. the believers in and loyal adherents of a religious faith, esp Christianity

    2. any group of loyal and steadfast followers

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Related Words

Faithful, constant, loyal imply qualities of stability, dependability, and devotion. Faithful implies long-continued and steadfast fidelity to whatever one is bound to by a pledge, duty, or obligation: a faithful friend. Constant suggests firmness and steadfastness in attachment: a constant affection. Loyal implies unswerving allegiance to a person, organization, cause, or idea: loyal to one's associates, one's country.

Other Word Forms

  • faithfully adverb
  • faithfulness noun
  • overfaithful adjective
  • pseudofaithful adjective
  • quasi-faithful adjective

Etymology

Origin of faithful

First recorded in 1375–1425; faith, -ful

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The US-born pope, who has emerged as a leading voice against the war, will hold mass in St Peter's Square from 0830 GMT in front of thousands of faithful.

From Barron's • Apr. 5, 2026

Author JK Rowling is an executive producer on the series, which HBO says will be a "faithful adaptation" of her books.

From BBC • Mar. 25, 2026

Despite his countless hours with Claude Code, Jin isn’t faithful to any one AI lab.

From The Wall Street Journal • Mar. 21, 2026

Carrie Prejean Boller, a former beauty queen and faithful Trump supporter, has found herself at the center of an explosive conservative fight.

From Slate • Mar. 13, 2026

That he was loyal and faithful and true.

From "Moon Over Manifest" by Clare Vanderpool

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.